Earring back piece



FIG. 1 is a front elevational view of an earring back piece illustrating my new design.

FIG. 2 is a left side elevational view, the right side elevational view being a mirror image of this view.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a top plan view thereof; and,

FIG. 5 is bottom plan view thereof.

The broken lines showing earring structures in the drawings represent unclaimed portions of the design and form no part of the claimed design. The broken line showing of an ear represents environmental matter and forms no part of the claimed design. 

The ornamental design for an earring back piece, as shown and described. 